Correct me if I'm wrong, but I understand that Vonage uses the G.711 CODEC at the full 90 Kbps rate. Is it possible to use a different CODEC with the Motorola? The following questions pertain to a yes answer to the previous question. When one lowers the bandwidth via the bandwidth adjuster, does it change CODEC automatically to something other than G.711 or does Vonage have to send a firmware change to the Motorola?